#include<bits/stdc++.h>
using namespace std;
int r[100005];
int main(){
    freopen("duel.in","r",stdin);
    freopen("duel.out","w",stdout);
    int n;
    scanf("%d",&n);
    for(int i=0;i<n;i++)scanf("%d",&r[i]);
    sort(r,r+n);
    int cnt=1,maxx=0;
    for(int i=1;i<n;i++){
        if(r[i]==r[i-1])cnt++;
        else{
            maxx=max(maxx,cnt);
            cnt=1;
        }
    }
    printf("%d",max(maxx,cnt));
    fclose(stdin);
    fclose(stdout);
    return 0;
}